Stupid Geek Tricks (was Re: attempt recovery on service CRITICAL with nrpe)

[donavan nelson]

way cool, now I'd get rid of the wc -l and use the grep -c option and you save
another fork.

.dn

--
Donavan Nelson
4wx Networks
www.4wx.net

---------- Original Message -----------
From: "Steve Bonds" <r1p6os402 at sneakemail.com>
To: nagios-users at lists.sourceforge.net
Sent: Wed, 22 Jan 2003 18:40:22 -0800 (PST)
Subject: Re: [Nagios-users] attempt recovery on service CRITICAL with nrpe

> This is probably drifting dangerously offtopic into "stupid grep 
> tricks", but here's what I use:
> 
> Instead of:
> 
> ERS=`ps -eaf | grep ns-slapd | grep -v "grep" | wc -l`
> 
> use:
> 
> ERS=`ps -eaf | grep [n]s-slapd | wc -l`
> 
> The [] is normally used to match one of many chars.  In this case it 
> only matches one.  The "[n]" literal shows up in the process list on 
> the grep command.  However, [n] evaluated by grep down to become "n" 
> does not match the "[n]" it sees in the process list so your grep 
> won't show up.
> 
> It'll make more sense if you just try it.  ;-)
> 
>   -- Steve
> 
> On Wed, 22 Jan 2003, Jamin jragle-at-unm.edu |Nagios| wrote:
> 
> > It does not matter the order in this case.
> > Test it out.  As long as the grep is striped out before you do the word 
> > count, you are cool.
> > 
> > -Jamin
> > 
> > On Wed, 22 Jan 2003, donavan nelson wrote:
> > 
> > > you have that backwards...
> > > 
> > > ERS=`ps -eaf | grep -v grep | grep ns-slapd | wc -l`
> > > 
> > > should be
> > > ERS=`ps -eaf | grep ns-slapd | grep -v "grep" | wc -l`
> > > 
> > > the second grep "could" make an appearance.
> 
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------- End of Original Message -------



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